It would be used as a verb, because it describes the action of the cloud of dust.
A nebula IS a cloud of dust and gas loosely held together by gravity.
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Cloud condensation nuclei are solid particles around which cloud droplets form. Dust and salt are examples of particles that can become cloud condensation nuclei.
Temperature, available water vapor, and dust partices to condense around.
Water droplets need to condense on them.
A cloud of grain dust
a dust cloud
That would be a nebula, which is an interstellar cloud of hydrogen gas, dust, and plasma. It is the first stage of a star's cycle.
A nebula.
Otto Schmidt created the dust cloud theory
A Cloud of Red Dust was created on 1997-10-06.
dust
A cloud of dust and gas in space is known as a Nebula.
The presence of dust in the air expedites cloud formation. This is because the water droplets stick to the dust.
Not if they stampeded in a swamp!
If you are refering to popular lines like "Disappearing in a cloud of dust" or "in a cloud of smoke" it can be refering to a cleche' as in old westernes when cowboys would ride of into the sunset, the hooves of their horses kicking up a cloud of dust and in that way he would "disappear" from sight. In the same way, magicians used to set smoke off on stage to help in their disappearing acts to blind the audience from not seeing exactly what they were doing. I hope this answeres your question ;D
It is usually just called a debris cloud or dust whirl.